URL

Chipset
ftp://ftp.hp.com/pub/softpaq/sp26001-26500/sp26449.exe

VGA, Graphic
ftp://ftp.hp.com/pub/softpaq/sp26001-26500/sp26446.exe

Display
ftp://ftp.hp.com/pub/softpaq/sp26001-26500/sp26451.exe

Sound, Audio
ftp://ftp.hp.com/pub/softpaq/sp26001-26500/sp26445.exe
or

http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=23&PFid=23&Level=4&Conn=3&DownTypeID=3&GetDown=false#AC

(Executable file, a4.04)

LAN, Network
ftp://ftp.hp.com/pub/softpaq/sp26001-26500/sp26450.exe

Modem
ftp://ftp.hp.com/pub/softpaq/sp26001-26500/sp26447.exe

Multimedia Keyboard
ftp://ftp.hp.com/pub/softpaq/sp26001-26500/sp26448.exe

Important:
Please ensure that you have a working backup of all your data before executing any suggested action plan.  Hewlett-Packard shall not be liable
for any direct, indirect, special, incidental or consequential damages in connection with any suggestion or action plans suggested by us.

Please check out our tools and resources to support your HP and Compaq products, http://welcome.hp.com/country/us/eng/support.html
In addition, you may visit our web-based tool that provides diagnosis and resolution of your computer hardware and software problems

http://instantsupport.asiapac.hp.com